Science Review U1-4

Which of these is NOT a method used to cleanse water?

• Filtration

• Transfiguration

• Decantation

• Extraction

What is one substance that water can disolve?

• Sugar

• Butter

• Oil

• Gasoline

Tags

NGSS.MS-PS1-2

What is the formula to calculate Density?

Burning a piece of paper is a ____ reaction.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

How many atoms does 3NaCl contain?

• 2

• 3

• 6

• 12

Tags

NGSS.MS-PS1-1

Which of these is NOT an indicator of a chemical change?

• Dissolving

• Bubbling

• Precipitate

• Temperature Rise

• Color Change

​ ​ Isotopes are...

• the same elements that have a different number of protons

• the same elements that have a different number of electrons

• the same elements that have a different number of neutrons

• the same elements that have a different number of valence shells

What is the dependent variable in:

What is the effect of heat on the amount of leaves a plant grows?

Tags

NGSS.MS-LS1-5

The force that prevents solid objects from falling into each other is called ___ force

Tags

NGSS.MS-PS2-4

What is Newton's Third Law of Motion?

• Acceleration and mass of an object each have a  direct relationship to the net force acting on that object.

• For every action, there is an equal but opposite reaction

• Any object at rest will remain at rest unless an external unbalanced force acts upon it.

• Any object in motion will remain at a steady speed unless an external unbalanced force acts upon it.

Tags

NGSS.MS-PS2-1